نتایج جستجو برای: so decrease biodiversity increase agricultural value added

تعداد نتایج: 2313345  

Journal: :The South African Journal of Industrial Engineering 2012

2015
Michèle Tixier-Boichard Etienne Verrier Xavier Rognon Tatiana Zerjal

and Zerjal T (2015) Farm animal genetic and genomic resources from an agroecological perspective. Agroecology, as a scientific approach, relies on a better knowledge of biodiversity at all levels of organization and function, in order to better manage agricultural production systems, from farm scale to landscape. Ecological concepts such as functional redundancy, complementary use of resources,...

2007
David K A Barnes Stefanie Kaiser

There is strong evidence that polar ice-caps are, in places, rapidly melting. This is both in response to emergence from the last ice age but also current unprecedented rises in atmospheric carbon dioxide. Melting and the regional warming underlying it, are highly complex and influences on life is debated. In the Arctic and the Antarctic Peninsula the number of glaciers retreating and retreat r...

2015
Tobias Plieninger Christian Levers Martin Mantel Augusta Costa Harald Schaich Tobias Kuemmerle

Scattered trees support high levels of farmland biodiversity and ecosystem services in agricultural landscapes, but they are threatened by agricultural intensification, urbanization, and land abandonment. This study aimed to map and quantify the decline of orchard meadows (scattered fruit trees of high nature conservation value) for a region in Southwestern Germany for the 1968 2009 period and ...

Journal: :journal of agricultural science and technology 2013
m. azamzadeh shouraki s. khalilian s. a. mortazavi

production subsidies, as a part of the strategy of economic growth of the agricultural sector, are of great importance around the world. subsidizing production inputs, particularly energy input, is another way of directing subsidy to the agricultural sector. in this research, production function of the agricultural sector was estimated using econometric methods and time series data. after calcu...

An important factor affecting economic growth is the creation of an efficient financial system for financing high value-added activities. Accordingly, this study examined the relationship between cost efficiency and competition in Iran’s banking industry using data of 18 state-owned and private banks over the period of 2006-2015. To do so, we used trans-log cost function to measure the cost eff...

The phenomenon of tax evasion has been always one of the most major issues among economists due to it's devastating effects on the economy and the process of economic development. Many scholars have always sought to provide solutions to reduce and limit tax evasion. The introduction of the VAT system can be seen as a milestone in the area of economic transparency and tax evasion, which refers t...

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